Rangement des catégories et des fichiers statiques (#2396)

* wip

* remove static_path

* wip

* wip

* PA dit que c'est bon

* wip

* wip

* Patch until 0.137 is properly managed

* undo patch, bad branch

* clean

* Rationalisation des catégories (#2465)

* #2464

* Dry show

* controllers

* clean wip

* done

* DRY controller params

* DRY static

* #2464

* Dry show

* controllers

* clean wip

* done

* DRY controller params

* DRY static

* Simplify

* fix

* DRY

* path

* wip

* backlinks

* done

* Fix home path

* hugo in static

* nice cleaning

* cleaner preview modal

* Fix

* Fix

* fix

* Fix projects

* Clean events posts and projects

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Co-authored-by: Sébastien Gaya <sebastien.gaya@gmail.com>